I gotta 00 Civic si turbo, i purchased a JDM CTR LSD, i took it to my tranny shop & they told me that its not gonna fit because there is a raised lip on the stock carrier & there isnt a lip on the LSD. what do i have to do?

Here is the JDM CTR LSD

 

here is the stock carrier with the raised lip around the center by the speedo gear

 

The JDM LSD without the lip

 

the inside of the tranny-case where the differential sits where it rubs against the case

 

gotta help me, i dont have any clue what to do.

GSR Ring Gear: $150

Throw-out bearing: $60

Axle seal: $20

JDM LSD: $360-shipped

this is costing a ton more than i expected......